Echosounding
音响测深法
🗣️ 情景例句
He is as poor as a church mouse.
他一贫如洗。
It is a great art to laugh at your own misfortune.
对己之不幸付之一笑，这是一门伟大的艺术。
I'm glad to hear that.
听你这么说真高兴。